After gains in the 1990s, loggerhead sea turtle nesting surveys reveal declines over the last five years, according to the New York Times. The 300-pound reptiles, with heads and necks out of proportion to their bodies, nest from North Carolina to Texas. Only the females come out of the water onto the beach to lay their eggs. Though researchers can't give a definite reason for the decline, they said increased commercial fishing may have something to do with it. Loggerheads get caught in nets and caught on baited hooks intended for other fish.